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Fix step size when computing clipping #531

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Jul 2, 2024
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Fix step size when computing clipping #531

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6 changes: 5 additions & 1 deletion awq/quantize/quantizer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -490,7 +490,11 @@ def _compute_best_clip(
group_size = self.group_size if self.group_size > 0 else org_w_shape[1]
input_feat = input_feat.view(-1, input_feat.shape[-1])
input_feat = input_feat.reshape(1, input_feat.shape[0], -1, group_size)
input_feat = input_feat[:, 0 :: input_feat.shape[1] // n_sample_token]

# Compute input feature step size (minimum 1)
step_size = max(1, input_feat.shape[1] // n_sample_token)
input_feat = input_feat[:, ::step_size]

w = w.reshape(org_w_shape[0], 1, -1, group_size)

oc_batch_size = 256 if org_w_shape[0] % 256 == 0 else 64 # prevent OOM
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